We Manufacture Taper Springs Ranging from WD 0.3mm to 60 mm

Features:

Conical Shape:

Taper springs, also known as conical compression springs, have a gradually decreasing coil diameter along their length, giving them a cone-like appearance.

Lateral Stability:

Tapered springs are more laterally stable compared to regular compression springs. The conical design provides increased stability, making them less likely to buckle or bend under load.

Progressive Rate:

Taper springs have a progressive spring rate, meaning the force required to compress the spring increases as it's compressed further. This is due to the larger-diameter coils progressively coming into contact with each other.

Reduced Solid Height:

The solid height of a taper spring (the height when the spring is fully compressed) is typically shorter compared to regular cylindrical springs with the same initial free length.

Variable Pitch:

The pitch of the coils in a taper spring changes along its length, contributing to the conical shape and progressive rate.

Smooth Transition:

Taper springs offer a smooth transition between different force requirements, making them suitable for applications where a gradual change in force or load is needed.

Service Life

It should be noted that if critical force-versus-deflection linearity is required, only the center 60-80% of the available deflection range should be employed. Thus, reserve at least the first and last 15-20% of the range for potential spring-end and adjacent coil-contact effects. These effects can be largely ignored for the majority of spring applications.

The “Suggest Maximum Deflection” used in our online and print catalog reflects the recommended inches of travel to obtain a statistical service-life of approximately 100,000 cycles(deflections) with infrequent breakage. This can be realized if the spring in question is not subjected to shock loads, rapid cycling, temperature extremes, corrosion, or stress values above those recommended. If the spring is statically loaded (not cycling), a near-infinite life can be expected. Extended spring service-life can be achieved through shot-peening. Our custom spring department can advise you regarding this procedure.

Materials

The highest grades of spring wire are used when fabricating our springs. To create cost-effective warehousing of our stock spring inventory for our customers, we offer material certification as custom springs only. Certifications of conformance for geometric tolerances set by the Spring Manufacturers Institute (SMI) are available for our stock springs upon request.

The term “spring steel” is a stock inventory term covering music wire, hard-drawn(MB) wire, and oil-tempered wire. Additionally, stock compression spring materials may include stainless steel (300 series), beryllium copper, and phosphor bronze.

Tolerances

Shama Spring manufactures our stock springs to commercial tolerances, as defined by the SMI. Calculated rates and loads based on SMI geometric tolerances have an approximate +/- 10%. Low or high-index springs will have higher values. Compression springs characteristically have an hourglass shape when coiled on an automatic coiler; therefore, outside/inside tolerance is applied to end coils only. This is an improvement consideration when selecting a spring that fits over a rod or inside a cylinder. Call us if tighter tolerance values are required for your application.

Specification:

Initial Diameter:

The larger diameter of the taper spring, usually at the bottom or base of the cone.

Final Diameter:

The smaller diameter of the taper spring, typically at the top or tip of the cone.

Free Length:

The overall length of the spring when it's not under any load.

Solid Height:

The height of the spring when it's fully compressed.

Wire Diameter:

The thickness of the wire used to make the spring. Thicker wire results in a stronger spring.

Number of Coils:

The total number of coils in the spring, which can affect its overall length and flexibility.

Spring Rate:

The amount of force the spring exerts per unit of deflection. Taper springs have a variable spring rate due to their conical shape.​

Load and Force Ratings:

The maximum load or force that the spring can handle without permanent deformation.

Material:

Taper springs are typically made from materials like music wire, stainless steel, or other alloys to ensure durability and resistance to corrosion

End Configurations:

Taper springs may have different end configurations, such as closed and ground ends, to enhance stability and alignment.

Application-Specific Design:

Taper springs can be designed with specific load requirements, rate profiles, and dimensions to suit a variety of applications.